im using TIME branded with time firmware router with Unifi. Any reason to flash TM firmware? no issues so far and im just wondering if its worth the hassle?

Hi all, i recently repurposed this router which was flashed to this beta firmware years ago.
1.1.3 Build 20180502 rel.46288 (EU)

I am using this router as AP, but it only works with 5Ghz. Clients cant connect to the 2.4Ghz network. The network can be seen , but just fails to connect. Tried rebooting and resettting the router, still the same.

I see that there is an updated version on the tplink website
https://test.tp-link.com/en/support/downloa...00/v1/#Firmware

from 2022
Archer C1200(EU)_V1_1.1.4 Build 20220517

Can i flash this firmware to see if that fixes the 2.4Ghz issue?

I did some further tests. Windows 11 Pc can connect but takes a while to connect and getting internet access takes like 30 seconds. No such issue on the 5G network.
For IOS and Android , cant connect at all